Pseudonannolene rolamossa Iniesta & Ferreira

Iniesta, Luiz Felipe Moretti & Ferreira, Rodrigo Lopes, 2013, Two new species of Pseudonannolene Silvestri, 1895 from Brazilian iron ore caves (Spirostreptida: Pseudonannolenidae), Zootaxa 3716 (1), pp. 75-80 : 77-78

Pseudonannolene rolamossa Iniesta & Ferreira , new species.

( Figs. 2 A, B, C)

Material examined. Holotype: Male ♂ ( ISLA 4004) from Nova Lima/MG, Brazil; Rola Moça 1 cave; 22/III/2012; Ferreira, R. L. collec.

Paratype: 1 Female ♀ ( ISLA 4005) from Nova Lima/MG, Brazil; Rola Moça 1 cave; 22/III/2012; Ferreira, R. L. collec.

Etimology. The epithet is a noun in apposition as a toponymic for the name of the park (Parque Estadual do Rola Moça) where the species was collected. The epithet rolamossa is formed by a combination of words: "rola" means a rolling action and "mossa"(moça) means young woman in portuguese. This name is a reference to an old legend about a young girl who fell off a hill in the region.

Measurements: Length from 56 up to 58.60 mm; maximum midbody diameter between 4 to 4.16 mm; body rings ranging between 56 to 58; length of antennae ranging from 3.78 to 4 mm (relation to diameter ranging 0.95 to 0.96); length of legs 2.20 to 2.42 mm (relation to diameter ranging 0.55 to 0.58); length of tarsal claw 0.22 to 0.24 mm (relation to diameter ranging 0.06 to 0.058).

Descriptions. Head: Pigmented in region of epicranium. Ocelli pigmented; ranging from 30 to 34. Three small labral teeth, a row of 24 labral setae and a row of 6 supralabral setae. Mandibles pigmented; 2 external teeth, 4 internal teeth (more a small one) and 9 rows on pectinate lamellae. Antennae pigmented; densely setose; First antennomere shorter than others; Second and third antennomeres of similar sizes. Fourth antennomere longer than the fifth; Sixth antennomere longer and wider than the fourth and fifth; Groups of basiconic sensilla on the lateral edge of fifth and fourth antennomere; Four terminal sensorial cones. Gnatochilarium typical of the genus; not modified.

Collum: Glabrous; More pigmented in edge and weakly in central region; striae on region lateral; limbus not modified.

Trunk: Prozonite of darkened pigmentation, metazonite dark brownish and some whitish and blackish spots; Prozonite separated from metazonite due to weak suture; presence of lateral striae (variable among individuals). Opening of the repugnatorial glands (ozopore) starting from the fifth ring. Limbus smooth. Pre-anal ring pigmented; anal valve with setae on the opening.

First pair of legs ( Fig. 2 C): Pigmented. Coxae shorter but still larger than others podomeres; densely setose; rounded. Sternum wider; sub-triangular and rounded; Pre-femur with width and length proportional; shorter than tibia and tarsus. Post-femur similar to pre-femur. Tarsal claw not modified. Oral process rounded; elongated; parallel to coxae; edge distal with wavy surface; bristles visible near base.

Gonopod ( Fig. 2 B): Coxae reduced; Sternum not visualized. Basal section elongated; length about 2 times longer than width; No bristles visible. Basiconic bristles distributed in rows on membranous internal edge, toward distal section. Pointed shoulder in basal section evident and rounded. Distal section with length slightly longer than width; Ornated solenomere with squamous surface and compound of two tips (trappings), external tip more elongated than the rounded internal tip. Base of solenomere covered by internal branch; Internal branch wider, stout and oblique; with longer setae (presumably sensory) surrounding meso-distal portion of the edge.

Figures

FIGURE 2. P. rolamossa n. sp., paratype female (ISLA 4005). A) Detail of anterior region; B) Gonopod; C) Oral process in first pair of legs and schematic drawing (the bristles were removed). Scales bars: A) 1 mm; B) 200 µm; C) 200 µm.